Internal-combustion engine



July 15, 1924: 1,501,626v

H. A. G. SIEKMANN INTERNAL GOMBUSTION ENGINE Filed Sept. 28, 1922 z shun-shut 1 July 15, I1924.` 1,501,626

H. A. G. SIEKMANN INTERNAL-1 GOMBUSTION ENG-INE Fued spt. 28, 1922 2 shun-sm.; 2

inutili Patented July 15, 1924.

UNlTED STATES PATENT OFFICE.

INTERNAL-COMBUSTION ENGINE.

Application filed September 28, 1922.

To @ZZ whom it may concern:

Be it known that l. HERMAN AUGUST GUs'rAv SinnMANN, a subject of the Republic of Germany, having declared my intentions of becoming acitizen of the United States, residing in `West Hoboken. Hudson County. and State of New Jersey. have invented certain new and useful Improvements in Internal-Combustion Engines, of which the following is a specification.

My invention relates more particularly to rotary valves for controlling the inlet and exhaust ports of internal combustion engines. in which the impact of the exploded gases against the outer surface of the valve causes expansion of the same by reason `of heat, and thus forces the valve outward and upward against the valve casing. thereby causing an uneven wear between said surfaces. which allows the compressed gases to escape. an objection. in that the full force of the compressed gases when ignited is not expanded upon the head of the piston. The uneven wear of the parts also requires frequent truing up of the parts, which is expensive and object-ionable causing delay and laying up of the engine temporarily.

l overcome these objectionable features by my invention, and the invention consists broadlyv in mounting the inlet and exhaust controlling valve upon and between ball bearing rollers, which are adjustable with relation to the valve, and in means for holding the same in anadjusted position with relation to the valve.

Another feature of my invention consists in providing automatic means for feeding lubricating oil to the ball bearing rollers and to the valve and valve casing, so as to insure a lm of oil between the valvev and its casing.

My invention also includes other special features of 'construction hereinafter described and claimed specifically.

In the accompanying drawings, I have shown and described my invention as applied to valves for internal combustion engines, but it is to be understood that it 1 is also applicable to journals or shafts which 5o rotate at 'a high speed where expansion takes place with like effect. I Y

Figure 1, is a vertical sectional elevation' as on the line l-l of Fig. 2, looking in the Serial N0. 591,164.

direction of the arrows, showing my invention applied to an internal combustion engine;

Fig. 2, is a sectional elevation upon plane of line 2 2 Fig. l, showing my invention as applied to two valves;

Fig. 3, is a front elevation of one of the ball bearing roller brackets: l

Fig. 4:, is a rear view of the same;

Fig. 5ie a plan thereof;

Fig. 6, a viewof the underside of one of the brackets;

Fig. 7, is a sectional detail of the bracket and ball bearing' roller,

Fig. 8, is a section on the line 8-8 of Fig. 2. looking in the direction of the arrows:v

In carrying out my invention luse any make of a well known or standard ball bearing roller.

In the drawings A. represents the upper end of an internal combustion cylinder, with the usual piston P, enclosed by the water jacke-t W.

Upon the head of the vengine is mounted the valve casing C, provided with the inlet port l, and exhaust port E, enclosing the rotary controlling valve V, and havingr the water jacket D, of well known construe tion.

The inlet and exhaust controlling valve V, is mounted loosely upon the shaft S, by means of a spider or spiders s, which fit in the longitudinal slots s', formed in the kends of the shaft S. It will thus be seen that the valve V, if free to adapt itself to any desired position upon the expansion of the parts by reason of heat or otherwise, and to float upon the said shaft S, there will result an uneven wear between the outer surface of the valve and the inner surface of the valve casing C, with the result ythat the compressed gases escape, and the full force of the charge is lost upon the eXplosion of the gases on the head of the pis ton P I overcome these objections and provide a perfect and tight contact between the con trolling valve and its casing C, by mounting the valve V, upon and between ball bearing rollers R, R R2, of any standard make,

which are adjustable with relation to the valve V and its casmg C, the valve casing 3; is mounted in the framework l?, by means -of which the bracket B and its roller B., may

be adjusted with accuracy to take up angv pla 'f between the valve and its casing C.

l 7lien the parts have been adjusted in their proper positions the bolts .7). are tightened and lock the bracket and roller in the desired position.

The upper ball bearing rollers' B', B2, are mounted in adjustable brackets B', B2, and are free to adapt themselves to the varying conditions of the valve V, under the tension of the springs T, T.

These upper ball bearing roller brackets are identical in construction.

The brackets B, B2, are held in the framework F, by means of threaded bolts 631, o, bt, Ziwhich pass through the slots 5"", Zr", Zie, g, formed in the lugs If, Zia, of the brackets Tension springs T, Tf, mounted upon adjustable screw threaded studs t t', held in the frai'nework l", tend constandly to hold the ball bearing,` rollers R, R2, and their brackets B", B2, downward, with the rollers against the outer surface of the valve V.

Upon the upper surfaces of these brackets B.,I BL. are formed grooves or gutters g, g, by means of which oil is fed automatically from the pipes P. P', through the openings g2. 02, in the brackets B', B2, to the ball iin c" rollers B2B?, the surplus oil on said 10j rollers flowing lo the Valve V and its casi thereby causing a film of oil between the valve and its casing at all ti item of no small importance in the ion of the Valve. operation is as follows 1- parts being' at rest, the lower ball bearing` roller B, is adjusted with relation t0 the valve V, by means of the threaded bolts o, l), and adjustin screw b3. The upper ball bearing rollers R2, are then adjusted in position with relation to upper surface of the valve V, by means of the bolts 7231, Z331. 734, 7)", and the threaded studs t, if. on which rests the tension springs T, T, held between the brackets B; B?. and the framework l".

The object of the tension springs T, T', is to impart a downward pressure upon the brackets B, B2, and their rollers R', R2, at

all times and under all conditions, and hold the said rollers ll', R2, against the upper surface of the valve V, thrusting` it against the lower. surface of the casing C, and insuring a tight and perfect contact between the salte and its valve casing, and insuring against the leakage of any gasses during the operation of the engine.

By reference to Fig. l. of the drawings, it will be seen that the lower ball bearing roller ll, is centered between the upper ball bearing' rollers R, R2, tbe said ball bearing:y rollersild. B2, being placed each side of the center of the valve Y, thus insuring against any i'edgiing of the ralr'e ll, during its operation.

By my improved method of feeding oil to the ball bearing rollers and rali/'e l insure at all times a film of oil between the 'valre and its casing, thus reducing the friction and wear between the parts to a minimum, and at the same time insuring a proper lubrication of the parts.

It will be understood that each set of rollers comprises two upper and one lower ball bearing roller, as seen in Figure Q.

lVhat l claim as my invention and de sire to secure by Letters Pate-nt is,

l. ln an internal combustion engine, a valve casing, a rotary Yvalve body therein, and rollers arranged to overlap from. opn Josite sides of the axial centre of said valve body.

Q. In an internal combustion engine, a Valve casing, a rotarj7 valve body therein, and rollers arranged to overlap from opn aosite sides of the aXial centre of said valve .ody, said rollers being;y mounted at opposite sides of said axial center.

3. ln an internal combustion engine. a valve casing, a rotary Valve body therein, rollers arranged to overlap from 'opposite sides of the axial centre oflsaid valve body, and oppositely-inclined bearings for the ases of said rollers.

4. In internal combustion engine, a

Valve casing', a rotary Valve body thereii'i,`

rollers arranged to overlap from opposite sides of the aXial centre of said valve body, and oppositely-inclined bearings for the axes of said rollers, said rollers being upon one side of the ralv'e body, and a roller disposed upon the opposite side of said valve body.

5. In an internal combustion engine,y a valve casing, a rotary Valve body therein, rollers arranged to overlap from opposite sides of the axial centre of said valve body, and oppositely-inclined bearings for the axes of said rollers, said rollers beingr upon one side of the valve body. and a droller disposed upon the. opposite side of said valve body, the last-named roller being disposed in a plane between the first-named rollers.

6. In an internal combustion engine, a valve casing, a rotary valve therein, oppositelv-inclined brackets in pairs, and ballbearing rollers having their axes mounted therein upon opposite sides of the axial centre of the said valve.

7. In an internal combustion engine, a valve casing, a rotary valve therein, oppositely-inclined brackets in pairs, ball bearing rollers having their axes mounted therein upon opposite sides ot the axial centre of said valve, and means for adjusting said brackets.

S. In an internal combustion engine, a valve casing, a rotary valve therein, oppositely-inclined brackets in pairs, ball bearing rollers having their axes mounted therein upon opposite sides ot the axial centre of said valve, and means -for adjusting said brackets, said brackets being free to adapt themselves to varying conditions of the valve.

9. In an internal combustion engine, a valve casing, a rotary valve therein, oppositely-inclined brackets in pairs, ball bearing rollers having their axes mounted therein upon opposite sides of the axial centre of the valve, means for adjusting said brackets, said brackets being vfree to adapt themselves to varying conditions of the valve, and springs exerting tension on said brackets in opposite directions.

10. In an internal combustion engine, a valve casing, a rotary valve therein, a pair of brackets, a pair of rollers mounted therein with their lower peripheries in contact with the upper face of the valves, and means tensioning said brackets downward from opposite sides of the axial centre of the valve.

ll. In an internal combustion engine, a valve casing, a rotary valve therein, a pair of brackets, a pair of rollers mounted therein with their lower peripheries in Contact with the upper face of the valve, and means tensioning said brackets downward fromopposite sides of the axial centre of the valve, said brackets being formed upon their upper surfaces with oil-conducting grooves.

12. In an internal combustion engine, a valve casing, a rotary valve the-rein, a pair of brackets, a pair of rollers mounted therein with their lower peripheries in contact with the upper face of the valve, and means tensioning said brackets downward from opposite sides of the axial centre of the valve, said brackets being formed upon their upper faces with oil-conducting grooves and openings communicating therewith through the brackets to conduct oil between the valve and casing.

13. In an internal combustion engine, a valve casing. a rotary Valve therein, al pair of brackets, a pair ot rollers mounted therein with their lower peripheries in contact with the upper tace of the valve, means tensioning said brackets downward from opposite sides of the axial centre of the valve, said brackets being Jformed upon their upper surfaces with oil-conducting grooves and openings communicating therewith through the brackets to conduct oil between the valve and casing, a supporting frame for said brackets, and means therein for supplying oil to said grooves.

14. In an internal combustion engine, valve casing, a rotary valve therein, oppositely-inc-lined brackets, ball bearing rollers having their axes mounted therein upon opposite sides of the axial centre ot` the valve, means for adjusting said brackets, said brackets being Jfree to adapt themselves to varying conditions of the valve, and an adjustably mounted roller bearing against the under face of said valve in axial alignment therewith.

HERMAN AUGUST GUSTAV SIEKMANN. Witnesses:

D. W. GARDNER, G. G. GARDNER. 

